JP2508007Y2 - Road paver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) This invention relates to a road paving machine.

(Prior Art) Conventionally, an asphalt finisher is well known as a road paving machine, and this asphalt finisher spreads the asphalt mixture evenly on a roadbed or a base layer with a predetermined paving width and then a specified thickness. It is a large-scale device that consistently performs the work of laying and compacting.

(Problems to be solved by the invention) As described above, a road paving machine such as an asphalt finisher is a large type with a large paving width that paves over the entire surface, so restoration paving accompanying water and gas pipe installation work, etc. It is unsuitable for paving work where the work width is narrow and part of the road is paved, such as one-sided construction of a Yadachi road,
In particular, in the pavement near the road shoulder, the pavement material cannot be dropped and spread properly, and the pavement work becomes impossible.

For this reason, in the conventional means, work efficiency is poor because it generally relies on manual work, and in particular, there is a demand for mechanization as soon as possible due to the lack of manpower.

Therefore, an object of the present invention is to provide a road paving machine that enables mechanization of paving work with a narrow construction width.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention is directed to a hopper provided in front of the machine body and a front and rear side for conveying a pavement material put in the hopper backward The long conveying device, the pavement material that is inherited from the conveying device, and which drops onto the road surface can be moved in the vehicle width direction. And a leveling device movable in any direction.

(Operation) According to such a road paver, after the pavement material dropping device and the laying device are moved to be positioned at the pavement position, the pavement material put into the hopper is conveyed backward by the conveyance device. To do. The conveyed pavement material is inherited by the pavement material dropping device and is correctly dropped from the lower portion to the pavement position. The dropped pavement material is evenly spread by a rear spreader.

Therefore, by moving the dropping part and the leveling device, for example, even in the case of pavement in the area close to the road shoulder, it is possible to drop the pavement material by specifying it at the target position, and evenly distribute it according to the dropping position. Can be spread over.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings of FIGS.

In the figure, reference numeral 1 denotes a machine body having front and rear traveling wheels 3 and 5, and rearward traveling wheels 5 (right side in FIG. 1) are drive wheels driven by power from an engine 7.

From the front to the machine body 1, a hopper 9, a transfer device 11,
The paving material dropping device 13 and the leveling device 15 are arranged in this order.

The hopper 9 has a funnel shape with its upper part largely open, and the conveying start end side of the conveying device 11 faces below the bottom opening 9a.

The transport device 11 has a wide belt for the driving wheel 17 and the driven wheel 19.
21 is a conveyor belt type that is endlessly wound, and the upper surface side is the conveyor surface. Also, drive wheels 17
The rotational power of the first motor M ₁ with a speed reduction mechanism fixed to the machine body 1 is transmitted via the transmission belt 23, and the conveyor belt 21 is rotatable in the arrow A direction.

The paving material dropping device 13 is a conveyor belt type in which a wide belt 29 is endlessly wound around a drive wheel 27 and a driven wheel 25, and the conveyance start end side is located below the conveyance end portion of the conveyance device 11. However, the transport end portion is the throwing portion 31. As shown in FIGS. 3 and 4, the support shafts 25a of the drive wheels 27 and the driven wheels 25,
27a is rotatably supported at both ends by a first frame 33 having a U-shaped cross section, and a supporting shaft 27a of the drive wheel 27 is provided with a second deceleration mechanism-equipped second frame 33 mounted on the first frame 33. motor
The transmission pulley 39 for transmitting power via the motor pulley 35 of M ₂ and the conduction belt 37 is mounted, and the rotational power of the second motor M ₂ is input to the drive wheels 27 via the conduction belt 37. There is.

The first frame 33 is fixedly supported by a second frame 41 having a U-shaped cross section, and a frame shaft 43 of the second frame 41 is extended downward and rotatably supported by a bearing 45 such as a bearing. Has been done. A pulley 41 is integrally fixed to the second frame 41, and a pulley 47 is conductively connected to a motor pulley 49 of a _third motor M _{3 having} a speed reduction mechanism and capable of normal rotation and reverse rotation via a conduction belt 51. Therefore, by the forward or reverse rotation of the third motor M ₃ , the second frame 41,
That is, the paving material dropping device 13 supported by the first frame 33.
Rotates left and right around the frame shaft 43 as a fulcrum, and the throwing portion 31 can move left and right (direction of arrow B in FIG. 3).

A leveling device 15 arranged behind the paving material dropping device 13
Is movable up and down by a support arm 57 that moves up and down around an arm shaft 55 by a hydraulic device 53, and is left and right with respect to a fixed frame 59 supported at both ends by the support arm 57 (direction of arrow C in FIG. 6). It is possible to slide to.

That is, the leveling body 61 of the leveling device 15 is the fixed frame.
A guide rail portion 63 of 59 slidably supports the sideways and side plates 65 are fixedly supported on both sides. The bracket 67 provided at the upper end of the floor covering 61 is
Projects upward from the long hole 63 formed in the fixed frame 59,
The left and right floating sprockets 69, 69 are connected and supported by a chain 71 that is endlessly wound around. The chain 71 meshes with a drive sprocket 73 driven by a _fourth motor M ₄ having a speed reduction mechanism and capable of normal rotation and reverse rotation, and moves left and right (arrow C) by the normal rotation or reverse rotation of the drive sprocket 73. As a result, the flatbed body 61 can be slid to the left and right.

Further, the leveling body 61 is provided with a vibrating body 75 so that the leveling body 61 acts on the pavement surface while vibrating slightly up and down by the operation of the vibrating body 75.

On the other hand, the hydraulic device 53 for vertically moving the support arm 57 includes a cylinder 53a pivotally attached to the body 1 side and a support arm 57.
The piston 53b is fixed to the side, and the leveling device 15 greatly rises from the ground surface by contracting the piston 53b, and contacts the ground surface by extending it.

In FIG. 1, reference numeral 77 indicates a fine adjustment mechanism for adjusting the inclination of the leveling device 15, and a handle 81 of a screw rod 79 screwed from the fixed frame 59 to the rising support frame 57.
By rotating, the fine adjustment of the inclination of the floor covering 61 can be obtained.

The first, second, third, and fourth motors M ₁ , M ₂ , M ₃ ,
The operation of the M ₄ can be controlled by a hand operation switch (not shown).

In the road paving machine configured in this way, when going to the site, it is possible to travel by fully raising the leveling device 15 by the hydraulic device 53. Next, at the work site, after the leveling device 15 is lowered to the ground surface, the paving material dropping device 13 is rotated to position the dropping part 31 on the paving device, while the leveling body 61 is moved to the left and right. It is moved and positioned at a position facing the lowering part 31.

Next, the paving material put into the hopper 9 is transported by the transport device 11
The pavement material is conveyed rearward by the pavement material dropping device 13 and the pavement material is accurately dropped onto the determined pavement portion from the dropping portion 31 of the pavement material dropping device 13. Then, it is spread evenly by the spread material 61.

[Effect of the Invention] As described above, according to the road paving machine of the present invention,
With the paving material dropping device that can be moved to the left and right, it is possible to drop the paving material accurately even in a place where the construction width is narrow or in the shoulder area. Further, after the dropping is completed, the pavement parts can be properly and evenly leveled by the movable leveling device, and the pavement by mechanization can be performed.

[Brief description of drawings]

FIG. 1 is a schematic side view of a road paving machine of the present invention, FIG. 2 is a schematic plan view of the same as above, FIG. 3 is a schematic plan view of a paving material dropping device, FIG. 4 is a side view of the same, and FIG. Is a schematic rear view of the flattening device, and FIG. 6 is a schematic plan view of the same. 1 ... body 9 ... hopper 11 ... carrier 13 ... paving material dropping device 15 ... laying leveling device 31 ... dropping unit M ₄ ... motor (drive means)

Claims (1)

(57) [Scope of utility model registration request] 1. A hopper provided at the front of the machine body, a long conveying device before and after conveying the paving material loaded into the hopper to the rear, and a paving material inherited from the conveying device and dropped onto the road surface. Road pavement characterized by comprising a pavement material dropping device that is movable in the vehicle width direction, and a leveling device that is disposed behind the pavement material dropping device and is movable in the vehicle width direction by a drive means. Machine.